zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/hostapp/zlogtrace_ref/localfs_save/log_usb.c b/ap/hostapp/zlogtrace_ref/localfs_save/log_usb.c
new file mode 100755
index 0000000..14182f8
--- /dev/null
+++ b/ap/hostapp/zlogtrace_ref/localfs_save/log_usb.c
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright (C) 2023
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details
+ *
+ * FileName : log_usb.c
+ * This program Capture module's trace log.
+ */
+
+#include "log_usb.h"
+
+int zLogAgt_Usb_Close(usbdev_t *udev)
+{
+ if (udev == NULL)
+ return -1;
+
+ if (udev->ttyfd >= 0) {
+ close(udev->ttyfd);
+ udev->ttyfd = -1;
+ }
+ return 0;
+}
+
+static int poll_wait(int poll_fd, short events, int timeout_msec)
+{
+ struct pollfd pollfds[] = {{poll_fd, events, 0}};
+
+ int ret = poll(pollfds, 1, timeout_msec);
+ if (ret == 0) {
+ return ETIMEDOUT;
+ } else if (ret < 0) {
+ dbg_time("%s errno:%d(%s) \n", __func__, errno, strerror(errno));
+ }
+
+ if (pollfds[0].revents & (POLLERR | POLLHUP | POLLNVAL)) {
+ return EIO;
+ }
+
+ if (pollfds[0].revents & (events)) {
+ return 0;
+ }
+
+ return EIO;
+}
+
+int zLogAgt_Usb_Write(usbdev_t *udev, char *pbuf, int len)
+{
+ int write_size = 0;
+ int timeout_msec = 3000;
+
+ while (write_size < len)
+ {
+ int retval = -1;
+
+ if (udev->ttyfd >= 0) {
+ if (poll_wait(udev->ttyfd, POLLOUT, timeout_msec)) {
+ break;
+ }
+ retval = write(udev->ttyfd, pbuf + write_size, len - write_size);
+ if (retval < 0 && errno != EINTR) {
+ dbg_time("%s write:%d, errno:%d(%s)\n", __func__, retval, errno, strerror(errno));
+ return retval;
+ }
+ }
+ write_size += retval;
+ }
+
+ return write_size;
+}
+
+int zLogAgt_Usb_Read(usbdev_t *udev, char *pbuf, int len)
+{
+ int read_size = 0;
+ int timeout_msec = 1000;
+
+ while (read_size < len)
+ {
+ int retval = -1;
+ if (udev->ttyfd >= 0) {
+ if (poll_wait(udev->ttyfd, POLLIN, timeout_msec)) {
+ break;
+ }
+
+ retval = read(udev->ttyfd, pbuf + read_size, len - read_size);
+ if (retval <= 0 && errno != EINTR) {
+ dbg_time("%s read:%d, errno:%d(%s)\n", __func__, retval, errno, strerror(errno));
+ return retval;
+ }
+ }
+ read_size += retval;
+ }
+ return read_size;
+}
+